GOOS=windows GOARCH=amd64 CGO_ENABLED=0 go build  -o build/win64.exe main.go
GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build  -o build/linux64 main.go
GOOS=darwin GOARCH=amd64 CGO_ENABLED=0 go build  -o build/mac main.go
#cp -r public build